Pipe union and fitting



Aug. 8, 1939. I. KAUFMAN I PIPE UNION AND FITTING Filed March 17. 193B 2 Sheets-Sheet 1 INVENTQR uzvme KAUFMAN ATTORNEY Aug. 8, 1939.

I. KAUFMAN PIPE UNION AND FI TTING Filed March 17, 195B 2 Sheets-Sheet 2 INVENTOR IRVING KAUFMAN ATTORNEY uN r os'rATEs PATENT orrics PIPE UNION AND n'rrmc Irving Kaufman, Bronx, N. Y., assignor of onethird to Simon Kaufman and one-third to Thomas W. Bieder, both of Bronx, N. Y.

Application March" 17, 1938, Serial No. 196.440"

- 1 Claim. (01. 285-13) This invention relates to pipe unions and fit- Screwed to. the threaded portion Ila of the tings. nipple i0, is a tubular coupling member ll, hav- An object of this invention is to provide a pipe ing an internally screw threaded portion a .union and fitting or joint of the character deat one end, engaging the threads Ila. Said scribed, adapted to be interposed between a pair coupling I4 is formed with an externally screw 6 of coaxial, spaced, opposed, fixed nipples, with-' threaded portion l5 adjacent the other end. out the necessityfor rotating or moving said Said member I! is furthermore formed with an pples. annular shoulder l6 adjacent the externally A further object of this invention is to provide screw threaded portion l5 thereof; and adjaa pipe joint and T-fltting of the character decent said shoulder I6 is a polygonal portion I8, 10 scribed, so constructed'that the T-fitting may adapted to receive a 'wrenchfor rotating said be rotated to any desired angular position, relacoupling. 1 tive to the axis of said nipples, and fixed in said Screwed to the coupling I4 is a T-fltting 20,

angular position against movement.

having a tubular portion or sleeve Illa coaxial Another object of this invention is to provide with the nipples Ill, H. Said tubular portion a strong, rugged and durable pipe joint and fltting of the character described, which shall be relatively inexpensive. to manufacture, easy to assemble, disassemble and adjust, and which a is screw threaded internally at one end, as

at 2|, for engaging the threaded portion it of coupling M. The rim edge of portion 20a of J \l the fitting 20 at said threaded end thereof is r 5g spaced from one another.

shall yet be practical and efficient to a high de- Other objects of this invention will in part .be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exemplified in the'construction hereinafter described, and of which the scope of application will be indicated in the following claim.

In the accompanying drawings, in which is shown one of the various possibleillustrative embodiments of this invention,

Fig. 1 is a side elevational view of a pipe joint and T-fltting embodying the invention, fixed to a pair of coaxial, opposed nipples; v

Fig. 2 is a side elevational view of the struc ture shown in Fig. 1, illustrating a method of disassembling the joint; Fig. 3 is a cross-sectional viewtaken on line 4. ll of Fig. 1;

Fig. 4 is a cross-sectional view taken on line.

4-1 of Fig. 1 and showing the T-fitting in vari-.

ous angular positions; and

Pig. .5 is a side elevational view of the vari-' 45 ans parts of my improved pipe'joint and T-fltting Referring now in detail to the drawings, II and II designate a pair of axial, spaced opposed,

fixed nipples or pipe sections with the threaded so portions thereof toward each other; and I2 designates a pipe joint or union and T-fitting embodying the invention and interconnecting said nipples. The nipples II and II have externally screw threaded portions Ila and Ila adapted to contact the shoulder ii. The fitting 20 20 may be provided with a usual cleanout plug 23, as shown in the drawings, and is formed with a branch 24 'to receive a pipe or nipple II. Adjacent the opposite end thereof, said portion 20a of fitting 20, is formed with an inter- 25 nal, inwardly extending annular flange Ill, having an inclined surface 3| on the inner side thereof. Beyond said flange ll, said fitting is formed with an annular outwardly flaring or tapering surface 33 for the purpose hereinafter appearing.

Passing through the flange 3. is a coupling 35, coaxial with the nipples II, II, and reduced in external diameter at one end thereof, as at 35a, and formed with an internally screw 85, threaded portion 36 at said end, engaging the threaded portion lla. of the nipples ll. .Said coupling 35 is formed at the opposite end thereof, with an outwardly extending bead or flange 31., at one end, disposed within the T-fitting 20, and engaging the inclined surface ll of the flange 30. Said coupling II is furthermore formed with an externally screw threaded portion 38 adjacent said bead ll of somewhat larger diameter than the reduced end portion "a of said coupling.

Screwed on said threaded portion 38 is a packing ring 40 having an internally screw threaded portion ll engaging the threads of said threaded portion; and an external conical surface 2, adapted to engage the internal conical ortapered surface 33 ofthe-fitting 2|; Adjacent said surface 42 is a shoulder 44, adapted to'contact one end edge. 45 of the fitting 2|. The ring I. is furthermore formed with an external polygonal portion 48 adapted to receive a wrench for turning said ring.

Upon screwing said packing ring toward the bead 31, said bead will be firmly pressed against the inclined surface 3! of the fiange 30. Upon unscrewing the packing ring 40 from the threaded portion 38 the same may be slipped oil. the reduced end a of the coupling IS. The fitting 20 may then be rotated about the axis of the nipples l0 and II to any desired angular posi-.

tion, upon loosening ring 40, and the ring may then again be tightened to hold the fitting in any angular position to which the same has been rotated.

The pipe joint and T-fitting may be disassembled from the nipples II and H by first unscrewing the ring and moving the same to the position shown in Fig. 2 of the drawings. The coupling member 35 may then be unscrewed from the nipple H and moved axially into the fitting 20. The fitting 20 may then be unscrewed from the coupling l4 and removed therefrom, together with the coupling member SI. The coupling member 35 may then be removed from the fitting by passing the same through the screw threaded opening 2| of said fitting. The external diameter of the bead 31 is less than the internal diameter of said screw threaded portion 2|, to permit removal of said coupling from fitting 20. The

coupling member l4 may then be unscrewed from the nipple Ill and the ring 40 slipped oi! the nipple H.

To assemble the pipe joint, the above steps are reversed. The coupling member II is first screwed on the nipple It. The ring I is slipped over the nipple II. The coupling II is passed through the fitting 20 and said fitting is then screwed into the coupling H, and coupling I! screwed to the nipple ll. Ring 40 is then screwed into the threaded portion 38 of said coupling to fix the parts against movement.

It will thus be seen that there is provided a device in which: the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes mightbe made in the embodiment above set forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A coupling for two pipe sections comprising a sleeve having an inwardly directed flange at one end thereof and an internal tapered recess exteriorly of the flange, internal threads at the other end of the sleeve, an externally threaded coupling member having a flange at one end thereof adapted to be inserted through the threaded end of the sleeve for seating the flange of the coupling member against the flange oi the sleeve, and a coupling nut having a tapered exterior surface engaging the threads of the coupling member and wedgingly engaging the tapered surface of said sleeve.

IRVING KAUFMAN. 

